Speak With Variety & Enthusiasm
Use a well-modulated and varied tone of voice, as you would in normal conversation, so that you don’t sound monotonous. Vary the volume, speed and rhythm of your voice to keep your listeners engaged. Use emphasis when necessary to draw attention to key information and differentiate it from the rest. Otherwise, use a pleasing tone and speech rhythm. To practice speaking with variety, you could try reading poems or proverbs aloud, with different tones of voice.
If your voice sounds enthusiastic, your listeners are more likely to stay tuned in to your message. If you sound indifferent, tired, or monotonous, it will be difficult to capture or retain your audience’s attention.